SMASH: Ratings Drop 20%….Beaten By Both Hawaii-Five-o & Castle!…..VOTE: Surprised?

Wow, NBC’s Smash has lost a ton of momentum since its debut last week.

On Monday night, ratings for the show — starring Katherine MacPhee and Debra Messing — dropped a whopping 20 percent t0 6.5 million viewers — this means it lost to both ABC’s “Castle” and CBS’s “Hawaii Five-O.”

“Hawaii Five-o” which snagged the # 1 spot in the 10 p.m. time slot, getting 10.2 million viewers, with a 10 percent jump over last week. “Castle” drew 9.7 million viewers and increased 9 percent over last week.

FASHION WEEK PHOTOS: Front Row At Diet Pepsi Style Studio…Debra Messing, Mary-Kate Olsen & More

Jonathan Adler and Debra Messing at the Diet Pepsi Style Studio fashion Show presented By Simon Doonan (John Parra/Getty Images for Diet Pepsi)

Yes, Diet Pepsi and Fashion Week do indeed mix well together!

At Lincoln Center’s The Box Thursday night, the Diet Pepsi Style Studio Fashion Show was held, presented by Simon Doonan (Barneys New York’s “Creative Ambassador-At-Large”) with stage design by his partner, home design guru Jonathan Adler. The runway and front rows were created by placing a slab of material over a series of stacked Pepsi cans, while fabric lanterns above were covered in a stylized Pepsi logo. A pair of bars at opposite ends served champagne — and, of course, Diet Pepsi served with the cutest straws covered in Pepsi logos.

Who was in the front row? Mary-Kate Olsen (unlike the previous night, sister Ashley didn’t join), Debra Messing, Kristin Chenoweth, Kelly Rutherford, Food Network‘s Sandra Lee, Angela Simmons, Jay Manuel, America’s Next Top Model‘s Jay Alexander, GCB‘s Jennifer Aspen, and Jonathan Cheban, who’s launching his own menswear collection during Fashion week. Fashion week regulars Marjorie Gubelman and Fern Mallis also attended.

Diet Pepsi teamed up with Doonan, the show’s director and curator, and gave four up-and-coming designers the opportunity to present their collections. The show featured three themed fall looks from each designer “with their unique hometown perspective,” according to organizers. Some pieces with metallic finishes were inspired by the long-and-lean Diet Pepsi can.

Check out the photos below of Debra Messing with Jonathan Adler, Jonathan Cheban and Angela Simmons, Kristin Chenoweth flanked by Kelly Rutherford and Jennifer Aspen, Kristen and Jennifer, and Mary-Kate Olsen with Simon Doonan.

(Click each photo to enlarge.  (Credits: John Parra/Getty Images for Diet Pepsi)